Batch Script to Convert YouTube DL Webm File to MP3 with FFMPEG
If you have downloaded a video from YouTube using youtube-dl and want to convert the webm file to mp3 format, you can easily do so with a batch script using ffmpeg. This script will help you automate the conversion process and save time.
Here is an example batch script that converts all webm files in a directory to mp3 using ffmpeg:
“`batch
@echo off
for %%i in (*.webm) do (
ffmpeg -i “%%i” -vn -ab 128k -ar 44100 -y “%%~ni.mp3”
)
“`
In this script, we use a for loop to iterate over all webm files in the current directory. For each file, ffmpeg is called with the input file (%%i), specifying the output format as mp3 with the desired audio bitrate (-ab) and sample rate (-ar). The resulting mp3 file is saved with the same name as the original webm file using a tilde modifier (%%~ni).
You can save this script as convert.bat and run it in the directory containing your webm files to convert them all to mp3.
Now let’s see how you can achieve the same conversion using different scripting languages like Bash and Python.
Bash Script:
“`bash
#!/bin/bash
for file in *.webm; do
ffmpeg -i “$file” -vn -ab 128k -ar 44100 “${file%.webm}.mp3”
done
“`
In this Bash script, we use a similar approach as the batch script. We iterate over all webm files in the directory and run ffmpeg on each file, specifying the output format as mp3. The ${file%.webm} expression removes the .webm extension from the original filename when generating the output mp3 filename.
Save this script as convert.sh and run it in a terminal within your webm files directory to convert them all to mp3.
Python Script:
“`python
import os
for filename in os.listdir(“.”):
if filename.endswith(“.webm”):
os.system(f’ffmpeg -i “{filename}” -vn -ab 128k -ar 44100 “{os.path.splitext(filename)[0]}.mp3″‘)
“`
This Python script achieves the same goal by iterating over all files in the directory and checking if they end with .webm. If so, it runs ffmpeg on that file using os.system(), similar to how we executed commands in shell scripts. The os.path.splitext() function is used here to split the filename into its base name and extension parts before generating the output mp3 filename.
Save this script as convert.py and run it within your webm files directory like `python convert.py` to convert them all to mp3.
By utilizing batch scripting along with tools like ffmpeg, you can easily automate repetitive tasks like converting video files from one format to another. Whether you prefer Batch, Bash, or Python scripts, there are multiple ways to achieve your desired result efficiently. Experiment with these scripts and customize them based on your specific requirements for converting YouTube DL webm files to mp3 format.